(Solved): All dimensions are in metres Figure 3. Composite shape. For the composite shape shown, calculate th ...

All dimensions are in metres Figure 3. Composite shape. For the composite shape shown, calculate the following - The centroid of the composite shape \( (x, y) \) - The second moment of area of the composite shape \( l_{x x} \) about an axis passing through the centroid of the composite shape The following data depends on your student number \[ \begin{array}{l} b=\left(\frac{\text { last } 3 \text { digits of your student number }}{1000}\right) \text { metres } \\ h=\left(\frac{\text { last } 2 \text { digits of your student mumber }}{100}\right) \text { metres } \\ d=\left(\frac{\text { last } 1 \text { digits of your student number }}{10}\right) \text { metres } \end{array} \] Student number \( =30411312 \)